How to access netgear via d-link

Hello,
I am computer challenged. I have to be hard wired in for my job and my dad's work computer was via Netgear but the usb token is not good. Guy at store sold me a D-link. My dad is also computer challenged and some times messes up the computer. Now stuck in work off line mode and will not connect to internet, even that I can see from his computer that D-link connection is strong. It did have a dial up model listed on the connections page which I deleted because we do not have dial up. We have cable one service. I try to add wireless as the connection but it says that it cannot find connection (even though same computer says connection is good). Any ideas?